Smalty - Stanovení odolnosti vůči chemické korozi - Část 4: Stanovení odolnosti vůči chemické korozi alkalickými kapalinami ve válcové nádobě (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.8.2016
Designation standards: ČSN EN ISO 28706-4
Classification mark: 945040
Catalog number: 500042
Publication date standards: 1.8.2016
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
This part of ISO 28706 describes a test method for the determination of the resistance of vitreous and porcelain enamelled articles to attack by alkaline liquids at temperatures between 25 °C and 95 °C. The apparatus used is a cylindrical vessel in which only one enamelled specimen is tested. NOTE 1: The test method was initially set up for determination of the resistance of vitreous and porcelain enamels to a hot sodium hydroxide solution. Within the scope of this part of ISO 28706, the resistance of other alkaline liquids can be tested. NOTE 2: This part of ISO 28706, which uses a cylindrical vessel, is generally used for tests carried out on vitreous and porcelain enamel coatings for the chemical industry